滑动扫描记录中压制谐波干扰方法
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摘要
提出一种适用于滑动扫描的纯相移滤波方法。通过对记录或者统计得到的可控震源力信号进行分解,得到各次谐波分量,然后通过对地震道记录按照各次谐波的相移量进行纯相移处理。对相移后的结果,设计合适的滤波器,消除谐波。结果表明,所提方法稳定、高效、易于实现,只需要知道可控震源力信号和每一炮的初至时间,就可以在滑动扫描记录中有效消除谐波干扰,适用于对野外采集数据进行实时处理。
A new method of eliminating harmonics for slip sweep recording was presented using the pure phase shift filter.The phase spectrum of each harmonic components from the ground force obtained by recording or statistics was computed.Then the procedure of pure phase shift operation was taken and a favorable filter was designed to eliminate the harmonics.The results show that this method is robust,fast and can be easily implemented.Using only the ground force and the start times of the sweeps,it can remove the harmonics in slip sweep data effectively,and it is applicable for real-time processing.
A new method of eliminating harmonics for slip sweep recording was presented using the pure phase shift filter.The phase spectrum of each harmonic components from the ground force obtained by recording or statistics was computed.Then the procedure of pure phase shift operation was taken and a favorable filter was designed to eliminate the harmonics.The results show that this method is robust,fast and can be easily implemented.Using only the ground force and the start times of the sweeps,it can remove the harmonics in slip sweep data effectively,and it is applicable for real-time processing.
引文
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[3]ALLEN K P,JOHNSON M L,MAY J S,et al.High Fi-delity Vibratory Seismic(HFVS)method for acquiringseismic data[C/OL].Expanded Abstracts of SEG 68thAnnual Meeting,1998:140-143.[2011-02-08]http://li-brary.seg.org/getabs/servlet/GetabsServlet?prog=normal&id=SEGEAB000017000001000140000001&idtype=cvips&gifs=yes&ref=no.
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[5]周学锋.基于预测滤波的谐波干扰压制方法研究[D].青岛:中国石油大学地球资源与信息学院,2011.ZHOU Xue-feng.Method of harmonic noise eliminationbased on its estimation[D].Qingdao:College of Geo-Resources and Information in China University of Petrole-um(East China),2011.
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[8]MARTIN J E,WHITE R E.Two methods for continuousmonitoring of harmonic distortion in vibroseis signals[J].Geophys Prospect,1989,37:851-872.
[9]MARTIN J E,BACON W M.Simultaneous vibroseis re-cording[J].Geophys Prosp,1993,41:943-967.
[10]LI Xiao-ping,SOLLNER W,HUBRAL P.Eliminationof harmonic distortion in vibroseis data[J].Geophys-ics,1995,60:503-516.
[11]FLEURE T.Method of reducing interference while usingoverlapping source point seismic recording techniques US,6418079[P].2002-07-09.
[12]MEUNIER J,BIANCHI T.Harmonic noise reductionopens the way for array size reduction in vibroseis opera-tions[C/OL].Expanded Abstracts of SEG 72th AnnualMeeting,2002:70-73.[2011-03-04]http://library.seg.org/getabs/servlet/GetabsServlet?prog=normal&id=SEGEAB000021000001000070000001&idtype=cvips&gifs=yes&ref=no.
[13]MEUNIER J,BIANCHI T.Method of reducing harmon-ic noise in vibroseis operations:U S,6603707[P].2003-08-05.
[14]MOERIG R.Method of harmonic noise attenuation incorrelated sweep data:U S,260021[P].2007-08-21.
[15]SERIFF A J,KIM W H.The effect of harmonic distor-tion in the use of vibratory surface sources[J].Geo-physics,1970,35:234-246.
[16]BAETEN G,ZIOLKOWSKI.The vibroseis source[M].Oxford:Elsevier Science Publication,1990.
[17]RIETSCH E.Computerized analysis of Vibroseis signalsimilarity[J].Geophys Prosp,1977,25:541-552.
[2]RAS P,DALY M,BAETEN G,et al.Harmonic distortionin slip sweep records[C/OL].Expanded Abstracts of SEG69th Annual Meeting,1999:609-612.[2011-02-05]http://library.seg.org/getabs/servlet/GetabsServlet?prog=normal&id=SEGEAB000018000001000609000001&idtype=cvips&gifs=yes&ref=no.
[3]ALLEN K P,JOHNSON M L,MAY J S,et al.High Fi-delity Vibratory Seismic(HFVS)method for acquiringseismic data[C/OL].Expanded Abstracts of SEG 68thAnnual Meeting,1998:140-143.[2011-02-08]http://li-brary.seg.org/getabs/servlet/GetabsServlet?prog=normal&id=SEGEAB000017000001000140000001&idtype=cvips&gifs=yes&ref=no.
[4]BAGAINI C.Overview of simultaneous Vibroseis acquisitionmethods[C/OL].Expanded Abstracts of SEG 76th AnnualMeeting,2006:71-74.[2011-03-03]http://library.seg.org/getabs/servlet/GetabsServlet?prog=normal&id=SEGE-AB000025000001000070000001&idtype=cvips&gifs=yes&ref=no.
[5]周学锋.基于预测滤波的谐波干扰压制方法研究[D].青岛:中国石油大学地球资源与信息学院,2011.ZHOU Xue-feng.Method of harmonic noise eliminationbased on its estimation[D].Qingdao:College of Geo-Resources and Information in China University of Petrole-um(East China),2011.
[6]RIETSCH E.Reduction of harmonic distortion in vibratorysource records[J].Geaphys Prosp,1981,29:178-188.
[7]SCHRODT J K.Techniques for improving Vibroseis data[J].Geophysics,1987,52:469-482.
[8]MARTIN J E,WHITE R E.Two methods for continuousmonitoring of harmonic distortion in vibroseis signals[J].Geophys Prospect,1989,37:851-872.
[9]MARTIN J E,BACON W M.Simultaneous vibroseis re-cording[J].Geophys Prosp,1993,41:943-967.
[10]LI Xiao-ping,SOLLNER W,HUBRAL P.Eliminationof harmonic distortion in vibroseis data[J].Geophys-ics,1995,60:503-516.
[11]FLEURE T.Method of reducing interference while usingoverlapping source point seismic recording techniques US,6418079[P].2002-07-09.
[12]MEUNIER J,BIANCHI T.Harmonic noise reductionopens the way for array size reduction in vibroseis opera-tions[C/OL].Expanded Abstracts of SEG 72th AnnualMeeting,2002:70-73.[2011-03-04]http://library.seg.org/getabs/servlet/GetabsServlet?prog=normal&id=SEGEAB000021000001000070000001&idtype=cvips&gifs=yes&ref=no.
[13]MEUNIER J,BIANCHI T.Method of reducing harmon-ic noise in vibroseis operations:U S,6603707[P].2003-08-05.
[14]MOERIG R.Method of harmonic noise attenuation incorrelated sweep data:U S,260021[P].2007-08-21.
[15]SERIFF A J,KIM W H.The effect of harmonic distor-tion in the use of vibratory surface sources[J].Geo-physics,1970,35:234-246.
[16]BAETEN G,ZIOLKOWSKI.The vibroseis source[M].Oxford:Elsevier Science Publication,1990.
[17]RIETSCH E.Computerized analysis of Vibroseis signalsimilarity[J].Geophys Prosp,1977,25:541-552.
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